When a humidity condition, including a humidity detected by a temperature and humidity sensor and a humidification load sensing unit falling below a threshold value, is met, an outside air conditioner supplies the heated and humidified air into the room. When the humidity condition is met during the indoor heating operation, the indoor heating operation is stopped or weakened. When the humidity condition is met, only the outside air conditioner is subjected to a heating and humidifying operation. Since the indoor air is not heated by the inside air conditioner more than necessary, when a heating load is low and a humidification load is present, a “conflicting state” can be prevented in which the inside air conditioner is subjected to a cooling and dehumidifying operation and the outside air conditioner is subjected to the heating and humidifying operation.

A heat source side unit for an air conditioning apparatus includes a machine room in which a compressor is accommodated, an air-sending unit room in which an air-sending unit is accommodated, a separator for partitioning a space into the machine room and the air-sending unit room, a reactor installed in the machine room, and a reactor mounting member fixed to the separator on a side of the machine room and on which the reactor is mounted, and the reactor mounting member includes a first mounting unit and a second mounting unit corresponding to each of the reactors with the sizes different from each other, and on the reactor mounting member, the reactor is selectively mounted on either one of the first mounting unit and the second mounting unit corresponding to the size of the reactor.

A heat source side unit for an air conditioning apparatus includes a machine room in which a compressor is accommodated, an air-sending unit room in which an air-sending unit is accommodated, a separator for partitioning a space into the machine room and the air-sending unit room, a reactor installed in the machine room, and a reactor mounting member fixed to the separator on a side of the machine room and on which the reactor is mounted, and the reactor mounting member includes a first mounting unit and a second mounting unit corresponding to each of the reactors with the sizes different from each other, and on the reactor mounting member, the reactor is selectively mounted on either one of the first mounting unit and the second mounting unit corresponding to the size of the reactor.

A structure for a multi-story building comprises a first passageway constructed internally within a building being configured with a mount for a ducted condenser unit (DCU) of a split type, unitary air conditioning system to achieve a desired level of condenser based heat dissipation and with a plurality of penetrations to accommodate a conduit through which refrigerant circulates between inside and outside units of the air conditioning system; and a second passageway constructed internally within the building for receiving air discharged from the DCU the second passageway terminating at an opening of the building through which the discharged air is exhausted to the atmosphere. The passageways have walls that are essentially closed, with the exception of the wall that is formed with an opening through which the discharged air flows. One or both of the first and second passageways upwardly extends across at least two stories of the building.

A heat pump inspection facilitating stand device supports a heat pump housing in an elevated position to inhibit debris from collecting on the housing wherein inspection of the housing and heat pump machine is facilitated. The device includes a stiff planar base ring wherein the base ring is configured to support a heat pump thereon. Each of a plurality of legs is coupled to and extends downwardly from a bottom surface of the base ring such that the base ring is supported in an elevated position. Each of a plurality of feet is coupled to and extends from a respective bottom end of an associated one of the legs and is structured to define an aperture extending through the foot for receiving an anchor therethrough for anchoring each foot to a footing.

A heat pump inspection facilitating stand device supports a heat pump housing in an elevated position to inhibit debris from collecting on the housing wherein inspection of the housing and heat pump machine is facilitated. The device includes a stiff planar base ring wherein the base ring is configured to support a heat pump thereon. Each of a plurality of legs is coupled to and extends downwardly from a bottom surface of the base ring such that the base ring is supported in an elevated position. Each of a plurality of feet is coupled to and extends from a respective bottom end of an associated one of the legs and is structured to define an aperture extending through the foot for receiving an anchor therethrough for anchoring each foot to a footing.

The motor fixing support includes long base sections extending in a vertical direction, which are respectively formed on both sides in a lateral direction, and folding pieces respectively extending from both side edges of the respective base sections in a short-side direction. The length of the folding piece in the extending direction, which extends from the base section toward the base section in the short-side direction, and the length of the folding piece in the extending direction, which extends from the base section toward the base section in the short-side direction, are larger than the lengths of the folding pieces in the extending direction.

The motor fixing support includes long base sections extending in a vertical direction, which are respectively formed on both sides in a lateral direction, and folding pieces respectively extending from both side edges of the respective base sections in a short-side direction. The length of the folding piece in the extending direction, which extends from the base section toward the base section in the short-side direction, and the length of the folding piece in the extending direction, which extends from the base section toward the base section in the short-side direction, are larger than the lengths of the folding pieces in the extending direction.

Provided is a refrigerant cycle apparatus capable of suppressing detects caused by iodine even when a refrigerant containing iodine is used. An air conditioner includes a refrigerant circuit through which a refrigerant containing iodine circulates. The refrigerant circuit includes a component that is in contact with a refrigerant containing iodine, the component being made of metal other than aluminum or an aluminum alloy, or having a content of aluminum which is equal to or less than a ratio at which corrosion of aluminum occurs by iodine. The component is at least one of a component of a compressor, a component of a heat-source-side heat exchanger or a utilization-side heat exchanger, a component of an expansion valve, a drier, and a connection pipe.

A heat-exchanger fixing plate is to fix a side portion of a heat exchanger to a housing panel of an air-conditioning apparatus, the heat exchanger including a heat radiation fin and a heat transfer tube. The heat-exchanger fixing plate includes a heat-exchanger support portion facing the side portion of the heat exchanger, and having an insertion hole through which a hairpin portion of the heat transfer tube of the heat exchanger is inserted; and a housing-panel fixing portion formed separately from the heat-exchanger support portion and fitted to the heat-exchanger support portion, the housing-panel fixing portion being fastened with a screw to the housing panel such that the heat exchanger is fixed to the housing panel. The housing-panel fixing portion is made of material having a higher mechanical strength than a mechanical strength of material of which the heat-exchanger support portion is made, and the heat-exchanger support portion is made of the material having a lower friction coefficient than a friction coefficient of the material of which the housing-panel fixing portion is made.